Cement dump



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' B. H. SCOTT CEMENT DUMP Filed Feb. 5, 1923 Patented Feb. 26, 1924.

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BERNARD H. SCOTT, OF GLENDALE, CALIFORNIA.

CEMENT DUMP.

Application filed February 3, 1923. Serial No. 616,865.

To all whom it may concern.

Be it known that I, Brennan H. Soon, a citizen of the United States, residing in the city of Glendale, county of Los Angeles, and State of California, have invented certain Improvements in Cement Dumps, of which the following is a specification.

My invention relates to devices for discharging mixed cement, in any quantity, in the bottom of a well without allowing it to fall any considerable distance. My device is adapted to be attached to the lower end of a pipe or casing whichma be of any desired length and filled with t 9 mixed cement and let down into the well until it reaches the bottom, whereupon the device is tripped and all the cement in the pipe is allowed to run out as the pipe and the device are withdrawn from the Well. The principal object of my invention is to provide a device of the character referred to which is simple, practical and durable, with a minimum number of parts to get out of order and be replaced.

In order to describe my invention, I have shown on the accompanying sheet of drawings one practical embodiment thereof, which I will describe in detail. In the draw- 1ngs,-

Figure 1 is a longitudinal sectional view of a device embodying my invention;

Figures 2, 3, 4,5 and 6, are cross sectional views taken on the lines 2-2, 3-3, 4-4, 55, and 66, respectively, of Fig. 1.

Figure 7 is a view similar to Fig. 1, showing the parts in the dumping or discharging position.

Referring now in detail to the drawings,

1 designates a pipe or casing to which my device can be attached. My device comprises a casing or body member 2, having its lower end beveled, as at 2*, and its upper end threaded for attachment to a pipe 1, as shown. The body 2 is provided interiorly with a disc-like portion, 3, with a central opening, 3*, and a series of openings 3*,as indicated clearly in Fig. 3. Mounted through the central opening 3 of said member 3, is a tubular member 4, having at its upper end a collar, 5, the upper end of which is beveled, as at 5. Slidably mount-- ed through said tubular member 4 and said member-5, is a shaft 6, having at its upper end a head 6, the under side of which is beveled, as at 6", to fit the beveled upper end of the member 5, and to seat therein, as indicated in Fig. 1. The lower end of said shaft 6 is provided in its opposite sides with longitudinally extending slotsor channels, as 6, which are deeper at 6. At its lower extreme end said bolt is provided with a nut 7. The tubular member 4, within the body 2, and below the part 3, is provided with an annular shoulder member 4, the upper side of which is square, as at 4 and the underside of which is beveled, as at 4. The lowermost end of said tubular member 4 is provided with a threaded nut or collar 4. Around the tubular member 4 is placed a coupling member 8, having right hand and left hand threads, as at 8*, and 8", and with a middle disc-like part 8 for turning the same. On the upper end of said member 8, is a conical member 9, having a beveled part, 9*, to fit the beveled underside 4 of the part 4, and also having a beveled part 9 to fit and fill the lower end of the body member 2, as clearly indicated in Fig. 1. On the lower end of said member 8, is another conical member 10, having its lower outside slightly conical, as at 10 and its lower inner opening beveled, as at 10*, and adapted to receive the outer parts of two keys, 11, seated in the shaft 6, and extending through openings in the tubular member 4, as clearly indicated in Fig. 1, and from Fig. 7. Vhen the parts are assembled, as in Fig. 1, the lower end of the body member 2 is closed and mixed cement put into the pipe 1, from the upper end will pass down through vthe openings 3 and fill the body member 2, resting on the conical member 9, and can extend up into the pipe section 1 as far as desired, depending upon the quantity of cement desired for one charge.

With the parts thus assembled and the cement mixture loaded into the casing as referred to, the whole thing is lowered into the well until the lower end of the shaft 6, strikes the bottom of the well, whereupon it is forced upwardly through the tubular member 4:, until the deeper channels 6 there in come opposite the keys, 11, 11, and said keys fall back into said channels, and release the parts, 8, 9 and 10, allowing them to dropdown away from the lower end of the body 2, and the charge of mixed cement runs out as the casing and device are drawn up again from the well.

A the parts 8, 9 and 10 are assembled, the part 8 is turned to force the parts 9 and 10 apart and to firmly seat the part 9 in the lower end of the body 2, and the part 10 on the keys 11. These parts move as a unit, as seen in Fig. 7f, when-they are tripped in the manner described.

Thus I have described one practical em bodiment of my invention, and while it is possible to make changes in the details of construction and arrangement'here shown for illustrative purposes, I do not limit my invention to'the showingmade, except as I may be limited by the hereto appended claims. c

I claim: I

1. In a device of the character described, in combination, an outer casing member, an inner tubular member of less diameter to provide an annular space between said outer and inner members, means-holding said inner tubular member in place in said outer member, a closurem'ember around said inner tubular member at'the lower end of said outer casing member, a shaft member vin said inner tubular member, and means C011". trolled by said shaft and said inner tubular member for holding said closure member. in

- closing position in the lower end of said outer casing member, said means being adapted to be released by the movement of said shaft inwardly.

2. In a device of the character described,

a in combination, an outer casing member, an

inner tubular member of less diameter to provide an annular space between said members, means holding said inner member in place, a closure member around said in ner tubular member at the lower end of said outer member, a shaft extending through said inner tubular member and said closure member and extending beyond the same, holding members interposed in said shaft, said inner tubular member and said closure member for holding the latter in closed position in the lower end of said outer casing therein of less diameter to provide an annular space therebetween, means holding said inner member in place therein, a closure member around said inner member and closing the lower end of said annular space the purpose indicated.

4. In a device ofthe character referred" to, 111 combination, an outer casmg member' having an inner disc-'like'part with a central opening therethrough and Wltll passage openings therethrough around said central opening, an inner member; extending;

through said centralgopening and providing an annular space between said outer memher and said inner memb'ena closure mem' ber around sald nner'member 1n the lower end of'said outer Inember'to close the lower end of said annular space, holding means for holding said closure member 111 closed. position, and'means adapted'to be moved inwardly as said device is lowered onto the bottom of a well for releasing said holding members and said closure member, whereby to open the lower end of said outer casing member, substantially as described.

5. In a device of the character referred to, in combination, an outer casing, an innor tubular member, spaced therefrom and forming an annular space between said members, a shaftthro-ugh said inner tubular member and extending beyond the lower end thereof, a closure member aroun'dsaid inner tubular member, in the lower end of said outer casing, holding members in said inner tubular memberand shaft and projecting from'said inner tubular member for holding said closure member nclosingposition in the lower end of said outer casing, and means whereby the movement of said shaft inwardly through said inner tubular member releases said holding members and said closuremember to open the lower end ofsaid outer casing member, substantially as described.

6. A cement dump of the character referred to comprising an outer casing, an mner tubular member,- means holding it spaced therein to form an annularspace be tween said outer casing and said lnnertubular member, said means permitting mat-v ter to pass therethrough in said annular space, a closure member around sa d tubular member at the lower end of said outer open, for

casing, said tubular member comprising two release said closure member, substantially as threaded members and an intermediate shown and described. 10 threaded member on which said two thread- Signed at Casper, Natrona County, Wy-

ed members are threaded, for adjustment oming, this 20th day of January, 1923.

and moving as a unit, key members for BERNARD H. SCOTT. holding said closure member in position to \Vitnesses: close the lower end of said outer casing, and HARRY A. HAvrcn,

a shaft for releasing said key members to VERNA C. BURNETT. 

